{"cve":"CVE-2026-49825","nvd":{"published":"2026-08-20T15:17:30.707","modified":"2026-10-26T10:10:00.140","status":"Awaiting Analysis","description":"lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link attributes in ``lxml.html.defs.link_attrs`` were missing ``xlink:href``, which can be used for URL bypass attacks in embedded SVG/MathML/etc. content. This vulnerability was fixed in lxml 6.1.1 and lxml_html_clean 0.4.5.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","score":8.2},"cwes":["CWE-79","CWE-184"],"references":["https://github.com/fedora-python/lxml_html_clean/commit/322357ac61c6cf80fcbaba53b4e92e31f3ded9f2","https://github.com/fedora-python/lxml_html_clean/releases/tag/0.4.5","https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-4jhm-jv67-739f","https://github.com/lxml/lxml/commit/5927a6d5e851845140975d99b65461e255caaab0","https://github.com/lxml/lxml/releases/tag/lxml-6.1.1"],"products":[],"source":"nvd","synced_at":"2026-10-26T10:28:23.151169805+00:00"},"epss":{"cve":"CVE-2026-49825","score":0.00297,"percentile":0.22167,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4jhm-jv67-739f","url":"https://osv.dev/vulnerability/GHSA-4jhm-jv67-739f","summary":"`lxml_html_clean.Cleaner` does not strip `javascript:` URLs from namespaced URL attributes","modified":"2026-07-13T16:42:41.379452174Z","packages":[{"ecosystem":"PyPI","name":"lxml-html-clean","purl":"pkg:pypi/lxml-html-clean","ranges":["<0.4.5"],"fixed":["0.4.5"]}]},{"id":"PYSEC-2026-2614","url":"https://osv.dev/vulnerability/PYSEC-2026-2614","summary":"`lxml_html_clean.Cleaner` does not strip `javascript:` URLs from namespaced URL attributes","modified":"2026-07-13T16:32:12.324499114Z","packages":[{"ecosystem":"PyPI","name":"lxml-html-clean","purl":"pkg:pypi/lxml-html-clean","ranges":["<0.4.5"],"fixed":["0.4.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}